ICD-10-CM coding guidelines
Plain-language explanations of the coding conventions and sequencing rules that apply to each ICD-10-CM chapter, based on the official CMS/NCHS Official Guidelines for Coding and Reporting.
- Ch. 1Certain infectious and parasitic diseases
- Ch. 2Neoplasms
- Ch. 3Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Ch. 4Endocrine, nutritional and metabolic diseases
- Ch. 5Mental, Behavioral and Neurodevelopmental disorders
- Ch. 6Diseases of the nervous system
- Ch. 7Diseases of the eye and adnexa
- Ch. 8Diseases of the ear and mastoid process
- Ch. 9Diseases of the circulatory system
- Ch. 10Diseases of the respiratory system
- Ch. 11Diseases of the digestive system
- Ch. 12Diseases of the skin and subcutaneous tissue
- Ch. 13Diseases of the musculoskeletal system and connective tissue
- Ch. 14Diseases of the genitourinary system
- Ch. 15Pregnancy, childbirth and the puerperium
- Ch. 16Certain conditions originating in the perinatal period
- Ch. 17Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
- Ch. 18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- Ch. 19Injury, poisoning and certain other consequences of external causes
- Ch. 20External causes of morbidity
- Ch. 21Factors influencing health status and contact with health services
- Ch. 22Codes for special purposes